Konstas, the Hurricane Fr5 b extra soft in almost all other conditions (next best fin to a Kashy, reccomended to me by Dave Kashy in fact)

Hello , i am confused Hurricane say:
"theFRB5b seems to work with the 162, but there is also a 5b/1 with slightly
more area and more lift for the new wide boards.
There is also a new shape FRB6 that is closer to the Kashy`s and it works
also with the 162.
I can not say what would be the best for you, a fin is a very personal
thing ;-) "

I have the Deb R20 , amazing i downwind but very difficult in upwind.......

thank you all,for information.
I try the Hurricane frb6 S stifnnes 651.with track all back and i see downwind was very good with good corner and speed.But upwind was terrible. when i put the track to middle the was detter . what must to do to be better at upwint?